Set of measured values for a pavement segment derived from either Pavemetrics or Mandli data ingested into the R-PMS system which has been aggregated for a minimum pavement segment of 26.4' by Pavemetrics or Mandli

The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of slope (in/mi, m/km, etc.).

https://en.wikipedia.org/wiki/International_roughness_index

 Faulting is defined as a vertical misalignment of pavement joints in Portland Cement Concrete Pavements (Jointed Concrete Pavement). Jointed Concrete Pavements is defined as pavements where the top-most surface is constructed of Portland cement concrete with joints (Item 49 codes ‘3’, ‘4’, ‘9’, ‘10’, and ‘11’). It may be constructed of either reinforced or unreinforced (plain) concrete.

Pavement rutting is defined as surface depression in the wheelpath. Pavement uplift (shearing) may occur along the sides of the rut. Ruts are particularly evident after a rain when they are filled with water. There are two basic types of rutting: mix rutting and subgrade rutting. Mix rutting occurs when the subgrade does not rut yet the pavement surface exhibits wheelpath depressions as a result of compaction/mix design problems. Subgrade rutting occurs when the subgrade exhibits wheelpath depressions due to loading. In this case, the pavement settles into the subgrade ruts causing surface depressions in the wheelpath.        

Cracking is defined as a fissure or discontinuity of the pavement surface not necessarily extending through the entire thickness of the pavement . Cracking Percent is defined as the percentage of pavement surface exhibiting cracking as follows:

For Asphalt pavements (Item 49 codes ‘2’, ‘6’, ‘7’, and ‘8’), Cracking Percent is the percentage of the total area exhibiting visible fatigue type cracking for all severity levels in the wheelpath in each section.

For Jointed Concrete Pavements (Item 49 codes ‘3’, ‘4’, ‘9’, ‘10’, and ‘11’), Cracking Percent is the percentage of slabs within the section that exhibit transverse cracking. Partial slabs shall contribute to the section that contains the majority of the slab length.

For CRCP (Item 49 code ‘5’), the Cracking Percent is the percentage of the area of the section exhibiting longitudinal cracking, punchouts, and/or patching. Transverse cracking shall not be considered in the Cracking_Percent for CRCP.

Calculation of the cracking percent score dependent upon Pavement Type derivation

 Asphalt

        Good < 5%

        Fair < 20%

        Poor >= 20%

Concrete

        Good < 5%

        Fair < 15%

        Poor >= 15%

Calculation of the IRI Scoring based upon the condition:

Good when IRI < xxx

Fair when IRI < yyy

Poor when IRI >= yyy

Calculation of the Rutting or Faulting score.

Dependency on Pavement Type as either

        derived from Concrete

        derived from asphalt

Asphalt:

        Good < 0.2

        Fair < 0.4

        Poor > 0.4

Concrete

        Good < 0.1

        Fair < 0.15

        Poor > 0.15